#include <iostream>
#include <vector>
using namespace std;
int main()
{
	vector<int>v(100);
	for(int i=0;i<v.size();++i)
	cout<<v[i];
	vector<int>::iterator i;
	for(i=v.begin();i!=v.end();++i)
	cout<<*i;
	for(i=v.begin();i<v.end();++i)
	cout<<*i;
	i=v.begin();
	while(i<v.end()){
		cout<<*i;
		i+=2;
	}
	return 0;
}
